| Axis Occupied Countries of WWII | 0 | - | 4.99 | 206,200 |
| Countries in World War I | 0 | - | 4.89 | 207,960 |
| Countries in World War II | 0 | - | 4.71 | 799,906 |
| Battle to Country | 0 | - | 4.92 | 34,687 |
| Important Cities in WWII | 0 | - | 4.48 | 82,501 |
| Independence from Whom | 0 | - | 4.99 | 182,563 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,633 |
| Most Recently-Settled Countries | 0 | - | 4.91 | 48,536 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,405 |
| Communist Countries in History | 0 | - | 4.65 | 450,789 |
| Cities Bombed During WWII | 0 | - | 4.09 | 26,831 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,173 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 220,709 |
| Countries of the World in 1900 | 0 | - | 4.88 | 64,607 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 168,320 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 125,796 |
| Countries by Former Name | 0 | - | 4.98 | 92,347 |
| Historical City to Country | 0 | - | 4.82 | 71,789 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.76 | 57,104 |
| WWII First Names | 0 | - | 4.46 | 38,397 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,709 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,120 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,544 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,268 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,484 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,171 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,362,240 |
| Countries Settled by Vikings | 0 | - | 4.93 | 110,647 |
| Countries with the Most Christians | 0 | - | 4.93 | 105,816 |
| Warsaw Pact Countries | 0 | - | 4.85 | 79,735 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 71,300 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 85,862 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 160,973 |
| Countries with the Most Catholics | 0 | - | 4.91 | 91,688 |
| Orthodox Countries | 0 | - | 4.91 | 115,859 |
| Countries that Have Won the Most Battles | 0 | - | 4.07 | 35,774 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 68,015 |
| Monarchies of Europe | 0 | - | 4.88 | 86,092 |
| Monarchies of Asia | 0 | - | 4.95 | 53,523 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 96,852 |
| World Leaders of the World Wars | 0 | - | 4.40 | 34,134 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 316,306 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 91,718 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 176,388 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 108,529 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 100,509 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 80,233 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,006,584 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 179,822 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 114,680 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 116,039 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,072 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 350,949 |
| Countries on the Equator | 0 | - | 4.82 | 131,530 |
| Members of the Arab League | 0 | - | 4.81 | 58,727 |
| Island Countries Quiz | 0 | - | 4.99 | 637,326 |
| Sahara Desert Countries | 0 | - | 4.97 | 124,844 |
| Himalayan Countries | 0 | - | 4.95 | 102,128 |
| Andean Countries | 0 | - | 4.90 | 56,724 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,539 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,473 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,766 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,434 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,624 |
| Danube Countries | 0 | - | 4.97 | 56,310 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,327 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,545 |
| Countries with the Best Passports | 0 | - | 4.86 | 70,154 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,662 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,045 |
| European Landlocked Countries | 0 | - | 4.99 | 114,777 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,609 |
| Countries with the Most Species | 0 | - | 4.99 | 89,052 |
| Countries 197 to 205 | 0 | - | 4.87 | 55,681 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,395 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,766 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,657 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,046 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,403 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,585 |
| Countries in the Alps | 0 | - | 4.82 | 101,480 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,492 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,523 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,047 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,603 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,236 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 86,780 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 88,949 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,682 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,012 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,056 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,820 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,297 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,366 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,838 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,415 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,879 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,309 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,882 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,866 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 191,912 |
| World Countries - Blind Typing | 0 | - | 5.00 | 70,997 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,885 |
| Largest Countries By Category | 0 | - | 4.96 | 143,684 |
| Countries by Countries | 0 | - | 4.95 | 53,947 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 66,717 |
| Country Flags with the Most White | 0 | - | 4.90 | 107,465 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,315 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 77,160 |
| Biggest Countries by Area | 0 | - | 5.00 | 923,051 |
| Northernmost Countries | 0 | - | 4.99 | 324,949 |
| Countries of South America | 0 | - | 5.00 | 781,752 |
| Countries of Oceania | 0 | - | 5.00 | 879,422 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,099,484 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,547,020 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.87 | 67,078 |
| Top 10 Richest Countries in Asia | 0 | - | 4.86 | 72,286 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 66,804 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 133,400 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 66,740 |
| Biggest Trading Partners - European Union | 0 | - | 4.90 | 64,039 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 156,678 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,300,116 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,137 |
| Countries by Independence Day Quiz | 0 | - | 4.64 | 44,314 |
| Former Countries by Capital | 0 | - | 4.45 | 103,233 |
| Former Countries | 0 | - | 4.71 | 123,423 |
| Guerrillas by Country | 0 | - | 4.45 | 38,231 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,028,752 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 87,346 |
| Political Movements by Country | 0 | - | 4.46 | 68,117 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 141,341 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,348,246 |
| One Border Countries | 0 | - | 4.98 | 405,969 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,079 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,851 |
| Countries with Megacities | 0 | - | 4.99 | 194,284 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,041 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,648 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,401 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,513 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,553 |
| Countries by Official Language | 0 | - | 4.95 | 153,219 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,048 |
| Countries in their Native Language | 0 | - | 4.98 | 176,518 |
| Subdivisions by Country | 0 | - | 4.82 | 46,125 |
| National Founders | 0 | - | 4.38 | 78,944 |
| Megadiverse Countries | 0 | - | 4.96 | 124,603 |
| Word Scramble - Countries | 0 | - | 4.87 | 1,902,607 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,687 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 381,479 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 105,883 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,073 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 129,609 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,187 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,413 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,918 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,681 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,720 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,253 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,438 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,816 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,649 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 79,636 |
| World Map Quiz | 0 | - | 4.90 | 47,911 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,601 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,081 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 89,958 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 106,880 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,187 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,458 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,727 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,284 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,178 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,700 |
| Widest Countries East to West | 0 | - | 4.93 | 118,363 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,656 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,725 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,041 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,659 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,505 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,396 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,223 |
| Countries with the Most Borders | 0 | - | 4.97 | 353,500 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,798 |
| Countries of Africa | 0 | - | 5.00 | 2,136,195 |
| Countries with Double Letters | 0 | - | 4.96 | 66,322 |
| Countries that End in N | 0 | - | 4.94 | 130,728 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,206 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,010 |
| Countries with W | 0 | - | 4.97 | 121,043 |
| Countries with Z | 0 | - | 4.98 | 241,659 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,222 |
| Countries That End in U | 0 | - | 4.94 | 106,532 |
| Countries with Four Letters | 0 | - | 4.99 | 374,127 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.96 | 87,918 |
| Countries that End in O | 0 | - | 4.92 | 146,174 |
| Countries that End in R | 0 | - | 4.85 | 95,961 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,740 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,238 |
